import {
  hasOwn
} from 'uni-shared'

import {
  isPage,
  initRelation
} from './util'

import parseBaseComponent from '../../../mp-weixin/runtime/wrapper/component-base-parser'

const newLifecycle = swan.canIUse('lifecycle-2-0')

export default function parseComponent (vueOptions) {
  const componentOptions = parseBaseComponent(vueOptions, {
    isPage,
    initRelation
  })

  // 关于百度小程序新生命周期(2.0)的说明(组件作为页面时):
  // lifetimes:attached --> methods:onShow --> methods:onLoad --> methods:onReady
  // 这里在新生命周期强制将onShow挪到onLoad之后触发,另外一处修改在page-parser.js
  const oldAttached = componentOptions.lifetimes.attached
  componentOptions.lifetimes.attached = function attached () {
    oldAttached.call(this)
    if (isPage.call(this)) { // 百度 onLoad 在 attached 之前触发
      // 百度 当组件作为页面时 pageinstancce 不是原来组件的 instance
      this.pageinstance.$vm = this.$vm
      if (hasOwn(this.pageinstance, '_$args')) {
        this.$vm.$mp.query = this.pageinstance._$args
        this.$vm.__call_hook('onLoad', this.pageinstance._$args)
        this.$vm.__call_hook('onShow')
        delete this.pageinstance._$args
      }
    } else {
      // 百度小程序组件不触发methods内的onReady
      if (this.$vm) {
        this.$vm._isMounted = true
        this.$vm.__call_hook('mounted')
      }
    }
  }

  if (newLifecycle) {
    delete componentOptions.lifetimes.ready
    componentOptions.methods.onReady = function () {
      if (this.$vm) {
        this.$vm._isMounted = true
        this.$vm.__call_hook('mounted')
        this.$vm.__call_hook('onReady')
      } else {
        // this.is && console.warn(this.is + ' is not attached')
      }
    }
  }

  componentOptions.messages = {
    '__l': componentOptions.methods['__l']
  }
  delete componentOptions.methods['__l']

  return componentOptions
}